/**
 * 导出文件
 */
import Excel from "exceljs";
import FileSaver from "file-saver";

async function exportLuckysheet(luckysheet, name = getTime(new Date())) {
  // 参数为luckysheet.getluckysheetfile()获取的对象
  // 1.创建工作簿，可以为工作簿添加属性
  const workbook = new Excel.Workbook();

  // 2.创建表格，第二个参数可以配置创建什么样的工作表
  luckysheet.every(function(table) {
    if (table.data.length === 0) return true;
    const worksheet = workbook.addWorksheet(table.name);

    // 3.设置单元格合并,设置单元格边框,设置单元格样式,设置值
    setStyleAndValue(table.data, worksheet);
    setMerge(table.config.merge, worksheet);
    setBorder(table.config.borderInfo, worksheet);
    return true;
  });

  // 4.写入 buffer
  const buffer = await workbook.xlsx.writeBuffer();

  FileSaver.saveAs(
    new Blob([buffer], { type: "application/octet-stream" }),
    `${name}.xlsx`
  );

  return buffer;
}

const setMerge = function(luckyMerge = {}, worksheet) {
  const mergearr = Object.values(luckyMerge);
  mergearr.forEach(function(elem) {
    // elem格式：{r: 0, c: 0, rs: 1, cs: 2}
    // 按开始行，开始列，结束行，结束列合并（相当于 K10:M12）
    worksheet.mergeCells(
      elem.r + 1,
      elem.c + 1,
      elem.r + elem.rs,
      elem.c + elem.cs
    );
  });
};

const setBorder = function(luckyBorderInfo, worksheet) {
  if (!Array.isArray(luckyBorderInfo)) return;
  luckyBorderInfo.forEach(function(elem) {
    let border = borderConvert(elem.borderType, elem.style, elem.color);
    let rang = elem.range[0];
    // console.log(rang.column_focus + 1, rang.row_focus + 1)
    worksheet.getCell(
      rang.row_focus + 1,
      rang.column_focus + 1
    ).border = border;
  });
};
const setStyleAndValue = function(cellArr, worksheet) {
  if (!Array.isArray(cellArr)) return;
  cellArr.forEach(function(row, rowid) {
    row.every(function(cell, columnid) {
      if (!cell) return true;
      let fill = fillConvert(cell.bg);
      let font = fontConvert(
        cell.ff,
        cell.fc,
        cell.bl,
        cell.it,
        cell.fs,
        cell.cl,
        cell.ul
      );
      let alignment = alignmentConvert(cell.vt, cell.ht, cell.tb, cell.tr);
      let value;
      if (cell.f) {
        value = { formula: cell.f, result: cell.v };
      } else {
        value = cell.v;
      }
      let target = worksheet.getCell(rowid + 1, columnid + 1);
      target.fill = fill;
      target.font = font;
      target.alignment = alignment;
      target.value = value;
      return true;
    });
  });
};

const fillConvert = function(bg) {
  if (!bg) {
    return {};
  }
  let fill = {
    type: "pattern",
    pattern: "solid",
    fgColor: { argb: bg.replace("#", "") }
  };
  return fill;
};

const fontConvert = function(
  ff = 0,
  fc = "#000000",
  bl = 0,
  it = 0,
  fs = 10,
  cl = 0,
  ul = 0
) {
  // luckysheet：ff(样式), fc(颜色), bl(粗体), it(斜体), fs(大小), cl(删除线), ul(下划线)
  const luckyToExcel = {
    0: "微软雅黑",
    1: "宋体（Song）",
    2: "黑体（ST Heiti）",
    3: "楷体（ST Kaiti）",
    4: "仿宋（ST FangSong）",
    5: "新宋体（ST Song）",
    6: "华文新魏",
    7: "华文行楷",
    8: "华文隶书",
    9: "Arial",
    10: "Times New Roman ",
    11: "Tahoma ",
    12: "Verdana",
    num2bl: function(num) {
      return num === 0 ? false : true;
    }
  };

  let font = {
    name: luckyToExcel[ff],
    family: 1,
    size: fs,
    color: { argb: fc.replace("#", "") },
    bold: luckyToExcel.num2bl(bl),
    italic: luckyToExcel.num2bl(it),
    underline: luckyToExcel.num2bl(ul),
    strike: luckyToExcel.num2bl(cl)
  };

  return font;
};

var alignmentConvert = function(
  vt = "default",
  ht = "default",
  tb = "default",
  tr = "default"
) {
  // luckysheet:vt(垂直), ht(水平), tb(换行), tr(旋转)
  const luckyToExcel = {
    vertical: {
      0: "middle",
      1: "top",
      2: "bottom",
      default: "top"
    },
    horizontal: {
      0: "center",
      1: "left",
      2: "right",
      default: "left"
    },
    wrapText: {
      0: false,
      1: false,
      2: true,
      default: false
    },
    textRotation: {
      0: 0,
      1: 45,
      2: -45,
      3: "vertical",
      4: 90,
      5: -90,
      default: 0
    }
  };

  let alignment = {
    vertical: luckyToExcel.vertical[vt],
    horizontal: luckyToExcel.horizontal[ht],
    wrapText: luckyToExcel.wrapText[tb],
    textRotation: luckyToExcel.textRotation[tr]
  };
  return alignment;
};

const borderConvert = function(borderType, style = 1, color = "#000") {
  // 对应luckysheet的config中borderinfo的的参数
  if (!borderType) {
    return {};
  }
  const luckyToExcel = {
    type: {
      "border-all": "all",
      "border-top": "top",
      "border-right": "right",
      "border-bottom": "bottom",
      "border-left": "left"
    },
    style: {
      0: "none",
      1: "thin",
      2: "hair",
      3: "dotted",
      4: "dashDot", // 'Dashed',
      5: "dashDot",
      6: "dashDotDot",
      7: "double",
      8: "medium",
      9: "mediumDashed",
      10: "mediumDashDot",
      11: "mediumDashDotDot",
      12: "slantDashDot",
      13: "thick"
    }
  };
  let template = {
    style: luckyToExcel.style[style],
    color: { argb: color.replace("#", "") }
  };
  let border = {};
  if (luckyToExcel.type[borderType] === "all") {
    border["top"] = template;
    border["right"] = template;
    border["bottom"] = template;
    border["left"] = template;
  } else {
    border[luckyToExcel.type[borderType]] = template;
  }
  return border;
};

/**
 * 获取当前日期
 * @returns 当前日期
 */
const getTime = function() {
  let time = "";
  let date = new Date();
  let year = date.getFullYear();
  let mouth = date.getMonth() + 1;
  let day = date.getDate();
  let hours = date.getHours() < 10 ? "0" + date.getHours() : date.getHours();
  let minutes =
    date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes();
  let second = date.getSeconds();
  year = year + "年" + mouth + "月" + day + "日";
  time = hours + ":" + minutes + ":" + second;
  return year + " " + time;
};
export default exportLuckysheet;
